from the Maintenance department...Issue with a Siemens 331 AI card
Experiencing an issue with an output on an AI card. Have a valid analog signal from the field device to the remote I/O PLC, but nothing from there to the control PLC.
> The 4-20 mA signal from the Red Lion up to the AI card is also good. Does this mean that a...
I have 6 identical units using the 331 and only one of them has this problem. I suspected a common...
By Curt Wuollet on 29 October, 2014 - 11:58 pm -
Measure the voltage to ground at the AI terminals. It sounds to me like the voltage is outside what...
By Chris on 29 October, 2014 - 8:44 pm -
Hello David, Thank you very much for the response and I apologize for the lack of information...
You haven't told us what kind of signal is coming from the level transmitter (presumably 4-20mA),...
from the Forum department...Converting a HoneyWell PLC Program
Convert a PLC Program from HoneyWell to Schneider Electric
By John on 30 October, 2014 - 3:38 pm -
I would ask if you have any paper copy of the program or the software to look at it online...
from the Instrumentation department...E1063 Mirror Image View
Messung/Mitsubishi HMI E1063 mirror view of graphics
from the Forum department...SLC500 Communications with Unitronics PLC
Setting up communications between a Unitronics PLC and SLC 500 PLC
By Jeremy Pollard on 29 October, 2014 - 9:00 am -
I think the simplest thing to implement here would be Modbus. The Unitronics can be a Modbus master...
By PLC Programmer on 17 October, 2014 - 10:04 pm -
If there exist an option for interface between SLC500 and the new PLC with an Ethernet, it would be...
from the ModbusTCP department...PROSOFT MVI56-MNET Slave Response Time
PROSOFT MVI56-MNET communication response time and performance
By CH on 27 October, 2014 - 5:49 pm -
I just tested this with Modscan32 and the MNET unit was replying as fast as Modscan32 could request...
from the Petroleum Refinery. department...Analog Input Cards for Programmable Logic Controller.
PLC card - High Channel density drawbacks.
By Ed Wilson on 27 October, 2014 - 3:58 pm -
Is the resolution the same on the 16 and 32? If so the 32 may react a little slower depending on...
from the Forum department...Flow Measurement Using Load Cells
Measuring the flow coming out of a vessel using only a load cell to control a valve.
That method (loss of weight, flow measurement) is not often used in automatic control. It...
from the Forum department...Modicon and SoMachine Advice Needed
Need to find a reasonable means of getting to know SoMachine.
By Curt Wuollet on 25 October, 2014 - 7:09 pm -
If memory serves me, a M32X. But they were awful spendy to buy as a trainer. Regards cww...
By Bob Peterson on 25 October, 2014 - 9:37 am -
I meant what process or is on the equipment. -- Bob http://ilbob.blogspot.com/...
By Curt Wuollet on 24 October, 2014 - 11:14 pm -
That's what I'm asking. I haven't picked one yet. Regards cww...
By Bob Peterson on 24 October, 2014 - 2:12 pm -
what processor is it? -- Bob http://ilbob.blogspot.com/...
from the Instrumentation department...Instrument Control Loop
Maintenance procedure of process control loop.
By Hans H. Eder on 25 October, 2014 - 12:29 am -
As posted by dave, something must have changed. Besides hardware (valve) problems, there could be a...
from the Technician in the wilderness department...GE2000 Drive Fault
GE2000 Drive Aux Fault 4-Generic Pointable Fault.
from the Confused Engineers department...Allen-Bradley Ethernet to Fanuc CNC
Communicating to Fanuc CNC controller from Allen-Bradley Compact Logix???
By david on 21 October, 2014 - 9:31 am -
Yes I'm sorry. The CNC and the PLC both are using Ethernet/IP. I have only ever used Ethernet/IP to...
By Patrick Lansdorf on 21 October, 2014 - 2:43 am -
I think that you need to inform about what options that are available on the Fanuc CNC. I guess...
from the Yokogawa Batch program download error department...Yokogawa Batch Programming Download Error
Error while trying to download a recipe on the batch process of yokogawa centum cs3000 software. Error says - "BATCH AUTO DOWNLOAD ERROR Gr.01 01-0008 No.00 Code 5427".
from the Automation List department...Connecting an Analog I/O Module to a Delta PLC
Having problems connecting an analog I/O module to my Delta PLC
By CauÍ on 20 October, 2014 - 6:22 am -
> Should be the +I and Comm.... Please verify the voltage across this. > it should be 24V....
By PLC Programmer on 17 October, 2014 - 9:49 pm -
Should be the +I and Comm.... Please verify the voltage across this. it should be 24V. If yes...
The asterisk *2 on the DVP06XA-S wiring diagram means 'note 2', which says,"If input signal is...
By CauÍ on 17 October, 2014 - 4:07 pm -
The feedback from the transducer is current, 4-20mA in 24Vdc but in sink type. I already tested it...
The SMC ITV 2050-043BL4 is an I/P transducer. The digit '4' in the part number is for the...
By PLC Programmer on 15 October, 2014 - 9:45 pm -
So Let me get this straight. You have tested the valve with a 24 V signal varying the current...
from the no communications plc department...No Communication with GE Fanuc 90-30
does anybody have ever had troubles with communications with GE PLC Fanuc 90-30?
By Russ Bartels on 16 October, 2014 - 3:20 pm -
Verify that you have the correct cable, if the cable has an RS-485 to RS-232 adapter built into the...
from the struggling here... department...Rotary Die Cutter Help
Looking for help on an application.
from the little guidance please... department...PLC Data Access Using OPC
I need help finding resources to help me develop OPC data access to record data to my database. I'm an information systems student new to PLCs and cannot find the necessary resources.
By pvbrowser on 16 October, 2014 - 2:53 am -
We run the OSS project http://pvbrowser.org it includes an OPC XML-DA client based on libcsoap,...
By Mark on 15 October, 2014 - 1:14 pm -
If you don't intend to join the OPC Foundation to obtain the spec, you are likely looking at...
By Fred Loveless on 14 October, 2014 - 10:43 am -
Most manufacturers of OPC Servers provide full functioning demos of their products. You can get...
By Mark on 14 October, 2014 - 8:53 am -
Hello, Writing a client or server without the specification will be ... a challenge. ...
from the Engineering department...HMI Communication with SIEMENS PLC
Sending the signal value from GE HMI(CIMPLICITY) to other controler over MODBUS RTU
By Patrick Lansdorf on 16 October, 2014 - 2:39 am -
Hi, You will need to check what type of Siemens PLC it is. If it is S7-1200 or S7-1500, you...
Siemens developed Profibus and Profinet, but they are not patented. Actually GE (which is the...
from the Forum department...MSTR TCP/IP Control Word Definitions
clear definition on some of the control words used in setting up the MSTR function with TCP/IP
Hi I came across this post tryign to find answer to an issue using the same configuration u...
from the twido suite department...PLC timed sequence
is it possible to stop all TON TOFF timers?
By PLC Programmer on 14 October, 2014 - 9:32 pm -
Bin95, Such a scenario can occur when PLC has redundancy. Have faced similar scenario with...
>... start button is pressed the 5 timers start there off/on delays. > But if I put a...
from the Database Integration IT department...S7 Communication with Libnodave Lib
Looking for a way to Access data from PLC - CPU S7 300 series DB to Our own VB.Net Application through libnodave Lib.
By PLC Programmer on 14 October, 2014 - 9:03 pm -
You need to be mapping signals from the s7 300 (Siemens) PLC to your software by using an OPC...
from the Forum department...Contactless Card Reader and PLC
How to connect contactless card reader to PLC?
By PLC Programmer on 14 October, 2014 - 6:31 am -
Please describe, why are you trying to connect a card reader to a PLC....
By doing just a little every day, you can gradually let the task
completely overwhelm you.